Automatic fire-extinguisher



(No Model.)

J. W. BISHOP. AUTOMATIC FIRE B TING ISHER.

Patented Apr. 24,1883.

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1 UNITED STATES PATEN T OFFICE.

JOHN W. BISHOP, OF NEW HAVEN, CONNECTICUT.

AUTOMATlC FIRE-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 276,343, dated April 24, 1883.

Application filed February 27, 1882. (No model.)

To all whom it may concern Be it known that], JOHN W. Brsuor, of New Haven, in the county ofNew Haven and State of Connecticut, have invented a new Improvement in Fire-Extinguishers; and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear,and exact description of the same, and which said drawings constitute part of this specification, and represent, in-- Figure l, a vertical central section Figs. 2, 3, and 4, vertical central sections, showing modifications of the invention.

This invention relates to an improvement in fire-extinguishers such as consist of a device for distributing water in an apartment, the water being held by a fusible connection which will be broken by the heat generated when a fire occurs, andwhen so broken the'water is liberated and distributed in theiapartment to extinguish the fire, the object of the invention being such aconstruction as will at all times permit the valve to be opened and closed without breaking the fusible connection, and at the same time to prevent possible contact of escapin g water with the fusible connection until a complete separation has taken place; and the invention consists in the construction,as hereinafter described, and more particularly recited in the claims.

Referring to Fig. 1, A represents the nozzle, which is screw-threaded, as at B, for attachment to the supply-pipes in the usual manner. As here represented, the nozzle carries at its outer. end a distributer, D, arranged so as to revolve on the nozzle, held in place by shoulders a and b-that is. so as to prevent axial movement, but free for rotation-and is provided with openings d, through which the water, when free, will flow, and in itsflow will impart a revolution to the distributera device too well known to require further description.

the spindle and opening J in the cap, so that when the sleeve is forced down it will make a water-tightjoint between the cap and spindle. This sleeve 1 is loose upon the spindle, and preferably without contact with the spindle. Onto the threaded end of the spindle a nut, G,

of fusible material, is screwed, so as to bear down upon thesleeve I and force it upon the packing, so as to seal the opening against the possible escape of water. The pressure for the sleeve is therefore produced by the nut G; but this nut, being of fusible material, will melt so soon as the heat generated in the apartment it it be in working order, and also if the pressure of water he on.

A spring, E, may be introduced between the endof the nozzle and the cap, held compressed by the cap, and so that when the nut is removed the spring will automatically throw the cap and sleeve from their position, whether or not the water be present. This arrangement of the sleeve between the fusible connection and the distributer carries the fusing-point so far away from the water-way that the water cannot escape so as to come in contact with and cool thefusible metal until complete separation has been attained.

The sleeve, spindle, and fusible connection may be applied to other distributing devicesas, for illustration, in Fig. 2 the cap C covers the end of the nozzle, with a spindle, F, ex tending longitudinally through the nozzle to the opposite end, where the sleeve I is placed upon it, as upon the spindle described in Fig.

1, and the nut screwed onto the spindle, as before, so as to press the sleeve upon the packing in the opening through which the spindle passes to seal that joint and force the cap to seal its seat. In this case the distributer is represented as within thenozzle, to be forced outward when the cap is liberated. In this case the spindle is represented as attached to the cap, and will be thrown out with it, instead of being made a permanent part of the nozzle, as in the first illustration.

In Fig. 3 another modification is shown, in which the cap closes the end of the nozzle, the distributer being within the nozzle and movable longitudinally, so as to be thrown out when the cap is removed. The same letters indicate corresponding parts, as in Fig. l.

Again,in Fig. 4 the distribnter D forms the cap to close the nozzle and movable longitudinally thereon when liberated, so as to permit the water to escape, the packing being between the outer or closed end of the distributer and the socket, the sleeve arranged around the spindlcas before, and a key of fusible material shown as introduced through a hole in the spindle to press upon the sleeve and force it upon its packing, substantially as did the nut in Fig. 1, the key being a well-known equivalent for the nut.

From the foregoing it will be understood that the particular form of distributer constitutes no part of my present invention; neither does the particular method of sealing or closing the water-way, it only being essential to my invention that there shall be a spindle with a sleeve around it and an adjustable fusible device arranged to bear upon said sleeve, and

the sleeve serve as the medium between the fusible material'and the sealing device, whereby the said fusible material through said sleeve will hold back the flow of water.

I claim- 1. In a fire-extinguisher, the combination of a spindle extending through the device which seals the water-way, a sleeve around said spindle, and a fusible device adjustable on said spindle, and bearing upon said sleeve to force and hold the device which seals the water-way, substantially as described.

2. In a fire-extinguisher, the combination of a cap closing the waterway, a screw-threaded spindle, a sleeve around said spindle, and a nut-0t fusible material adjustable on said spindle, arranged to bearon said sleeve, and through said sleeve to force the cap to close the waterway, substantially as described.

3. In a fire-extinguisher, the combination of a cap to close the water-way, a spindle extending through said cap, screw-threaded at its outer end, a sleeve around said spindle, and a nut on said screw-threaded spindle, whereby said sleeve is forced upon the cap andthe cap to its seat to seal the water-way, substantially as described.

JOHN W. BISHOP.

\Vitnesses JOHN F. BIsHoP, B. H. JOHNSON. 

